Posted on October 11, 2012 at 09:36To optimize the code I put nearly all the flags to bit structures. Now I came across a bug in the CXSTM8 when writing to bits. Reading bits doesn't bring any problem.
The good news for me is that I found a workaround.
Here is the example:
/*----------------------------------------------------*/
typedef struct
{
int
sem_on :1;
/* bit */
int
sem_off :1;
/* bit */
int
sem_tog :1;
/* bit */
} key_;
/*struct*/
key_ key_x;
/*struct*/
key_* key_down = &key_x;
&sharppragma
section
const
{}
/*struct*/
key_*
const
key_up = &key_x;
void clear_key_updown(
void
)
{
/*struct*/
key_* p_key;
key_down->sem_on = 0;
/* variable pointer ..
- ******** ERROR: bad addressing mode *********/
(*key_down).sem_on = 0;
/* alternate expression ..
- ******** ERROR: bad addressing mode *********/
p_key = key_down;
/* pointer substitution - o.k. */
p_key->sem_on = 0;
key_up->sem_on = 0;
/* const pointer - o.k. */
(*key_up).sem_on = 0;
/* alternate expression - o.k. */
}
/*---------end of file------------------------------*/
The workaround you can see is to substitute the specific pointers.
WoRo
#cxstm8 #cxstm8
